………...Is a device which converts energy from one form to another.

A heat engine is a device which converts heat energy into work. What is the working substance in an ideal heat engine.

Galvanic cell Is a device which converts chemical energy to electrical energy.Explain the mechanism of corrosion using electro chemical theory.

Galvanic cell Is a device which converts chemical energy to electrical energy.Give the diagrammatic representation of the cell Mg//MgSO_4 II CuSO_4//Cu . Write the half-cell reactions take place in this cell.

Galvanic cell Is a device which converts chemical energy to electrical energy.How many coulombs of electricity are required for the reduction of 1mol of MnO_4^- to Mn^(2+) ?

Waves are means of transferring energy from one point to another.Distinguish between longitudinal and transverse waves.

An electomagnetic wave is entering from one medium to another. Then the property which remains unaltered is

A heat engine is a device which effectively converts heat energy into mechanical energy. State the law which describe this principle.